Communicating in the presence of periodic microwave noise

• US 6,804,496 B1
• Filed: 02/04/2000
• Issued: 10/12/2004
• Est. Priority Date: 02/05/1999
• Status: Expired due to Term

• Current Assignee: ASTER Wireless, Inc. (Iota Communications, Inc.)
• Original Assignee: Appairent Technologies
• Inventors: Heberling, Allen D., Allen, James D., Carlson, Grant B.
• Primary Examiner(s): Nguyen, Simon
• Application Number:
  US09/498,576
• Time in Patent Office: 1,712 Days
• Field of Search: 455/67.15, 455/67.13, 455/85, 455/517, 455/507, 455/500, 455/501, 455/283, 455/63.1, 455/454, 455/67.11, 455/68
• US Class Current: 455/67.15
• CPC Class Codes: H04B 1/1027 assessing signal quality or detecting noise/interference for the received signal

Abstract

A wireless communication system operating in the presence of the periodic noise signals such as from a microwave oven, the communication system, including at least two wireless communication stations with each station including a transceiver, each such transceiver. Each transceiver includes a detector for detecting periodic noise signals and producing a first signal indicating the presence of noise signal'"'"'s quiescent period and second signals indicating the end of quiescent periods of such periodic noise signal. A controller responsive to the first and second noise signals controls the transceiver to provide effective communication with an other transceiver which minimizes the noise effect of the periodic noise signal. The transceiver transmits information concerning the detected quiescent period for use by the other transceiver to determine when to transmit during such quiescent period.

Claims

1. A wireless communication system operating in the presence of periodic noise signals, the communication system, comprising:

the wireless communication system including at least two wireless communication stations with each station including a transceiver, each said transceiver including;

a detector detecting periodic noise signals and producing a first signal indicating the presence of noise signal'"'"'s quiescent period and second signals indicating the end of quiescent periods of said periodic noise signal;

a controller responsive to the first and second noise signals for controlling the transceiver to provide effective communication with an other transceiver which minimizes the noise effect of the periodic noise signal; and

means for transmitting information concerning the detected quiescent period for use by the other transceiver to determine when to transmit during said quiescent period.

2. The wireless communications system as set forth in claim 1, wherein each transceiver operates in the presence of noise having different periodicity and wherein each transceiver further comprises means for transmitting during the quiescent period of the noise detected by the other transceiver.

3. A wireless communication system operating in the 2.4 to 2.5 GHz band in the presence of the periodic noise signals the communication system, comprising:

the wireless communication system including at least three wireless communication stations where one of said stations is a network controller and the others are device stations, each station comprising a transceiver and each said transceiver including;

a detector detecting periodic microwave signals and producing a first signal indicating the presence of noise signal'"'"'s quiescent period end second signals indicating the end of quiescent periods of said periodic noise signal; and

a transceiver controller responsive to the first and second signals for controlling its transceiver to provide effective microwave communication with the other transceiver which minimizes the noise effect of the periodic microwave signal; and

the network controller transceiver including means for receiving information concerning received noise quiescent period from the device stations and for signaling said device stations indicating when the device stations can transmit information to control traffic between the device stations and the network controller.